Aerofoil for a windscreen wiper arm



FIG. 1 is a perspective from above, one side and one end of an aerofoilfor a windscreen wiper arm;

FIG. 2 is a perspective view from below, other side and other end of theaerofoil of FIG. 1; and

FIG. 3 is an enlarged sectional view taken along line 3--3 in FIG. 1.

The ornamental design for an aerofoil for a windscreen wiper arm, asshown.